The Victorian woman was more than fully aware that explaining the Seal and the Apocalypse seemed like lunacy, but wasn't that what Warehouse agents knew to be "normal" in their world? Artifacts never were sane or able to be easily defined in some situations. But of course, demons trying to kill everyone was a bit harder to take than the usual explanation that an artifact had done this. Still, Helena would delve into as much detail as needed before Myka accepted things.
Myka most likely didn't actually want to know the things Helena had been through here. There would be a time when Helena would tell her, but that was not now. So Helena was trying to keep those pains and agonies, the near-death experiences silent. And in doing so, it really was killing her inside and breaking her all the more. Helena truly wondered just how much more she could possibly break because she hadn't been whole to begin with. Sooner or later, she would get to a point where she would break and she couldn't put herself back together. The more pieces broke, the smaller they got, and eventually you could no longer glue something back together. Helena was currently worried that this was that time for her. The fact that Myka didn't know what Helena had been through in this world and that she was from her future in their world was enough to break her again.
The reaction Myka had to the brief touch as she put the amulet around her neck did not elicit the usual response from her. In fact, it only served to break her heart further, and it made it that much more difficult to keep a hold of her emotions. Though when Myka revealed her pregnancy was caused by an artifact, Helena blinked and glanced at her stomach, then back up, one eyebrow slightly arched. "An artifact is responsible for your pregnancy?" That was a new one. "And no, the amulet is magic, not an artifact. I've worn that amulet for nine months without any ill effect, so you're safe." And with that, she answered a question Myka hadn't asked yet of how long she'd been here.
Brushing a hand through her hair and tucking some behind her ear, Helena drew in a slow, deep breath. When Myka tried to insist she take it back, Helena shook her head. "No, it's more important that you and your child are protected. I don't want anything bad to happen to you. I will get another amulet later." Which inadvertently revealed two things to Myka. One being that Helena really didn't care what happened to herself currently. She was at her breaking point and was ready to just give up. She'd been subjected to too many changes in a very short amount of time, and she was having trouble catching up. The second thing was that she cared about Myka, though she knew the younger woman wouldn't understand just how deep that care went, but that didn't matter. All that mattered was keeping Myka safe.